基于翼型加速流道的多叶离心风机设计方法

Design Method of Multi-blade Centrifugal Fan Based on Combination of Airfoil Blade and Acceleration Flow Passage

在叶轮结构参数优化方法和翼型叶片的研究基础上,本文针对多叶离心风机效率普遍较低的现状提出了一种基于翼型加速流道的多叶离心风机设计方法。该方法通过深入分析翼型结构及叶片出口角参数对加速流道的流动影响,建立了翼型加速流道的风机叶轮设计方法,在此基础上采用考虑粘性的蜗壳设计,形成了多叶离心风机的整体设计流程。将该设计方法应用于某款多叶离心风机设计实例,通过数值模拟结果表明:效率得到了明显的提升,为多叶离心风机的优化设计提供了新的思路和方法。

This paper proposes a design method for multi-blade centrifugal fans based on combination of airfoil blade and acceleration flow passage,building upon the research of impeller structure parameter optimization and airfoil blades,to address the commonly low efficiency in multi-blade centrifugal fans.On this basis,the overall design process of multi-blade centrifugal fan is formed by using the volute design considering viscosity.The design method is applied to the design of a multi-blade centrifugal fan,and the numerical simulation results show that the efficiency is obviously improved,which provides a new idea and method for the optimization design of multi-blade centrifugal fan.